As most people know, the Rosetta spacecraft will be ending its mission to comet 67P/CG this month. If all goes as planned, Rosetta will brake and execute a slow dive, shooting back as much data as possible before impact.
Rosetta has been circling in, closer and closer to the surface, but on 29 September it will make its final monuevre (ESA prefers the British spelling), initiating a “free-fall slowly towards the comet” for about 20 km.
The project team has chosen to aim for one of the “active pits”, identified as a source of gas and dust. The final descent will pick up very close range observations of one such pit, to learn as much as possible.
This should be an exciting and fitting ending for Rosetta.